APA-referens

Alvarado, G. E. (2023). Biography of Eng. Rodolfo Madrigal Gómez (1929-2023): Father of geomorphology in Costa Rica.

Chicago-stil citat

Alvarado, Guillermo E. Biography of Eng. Rodolfo Madrigal Gómez (1929-2023): Father of Geomorphology in Costa Rica. 2023.

MLA-referens

Alvarado, Guillermo E. Biography of Eng. Rodolfo Madrigal Gómez (1929-2023): Father of Geomorphology in Costa Rica. 2023.

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